<template>
  <div id="left-nav">
    <h2 style="text-align: left;padding-left: 1em;"><i class="el-icon-circle-plus" center @click="isCollapse=!isCollapse"></i></h2>
    <el-menu
      :collapse="isCollapse"
      style="min-height: 800px;"
      default-active="2"
      class="el-menu-vertical-demo"
      @open="handleOpen"
      @close="handleClose">
      <el-submenu index="1">
        <template slot="title">
          <i class="el-icon-location"></i>
          <span>数据管理</span>
        </template>
        <el-menu-item-group>
          <!--<template slot="title">模型管理</template>-->
          <el-menu-item index="1-1">模型管理</el-menu-item>
          <el-menu-item index="1-2">推送管理</el-menu-item>
        </el-menu-item-group>
        <!--<el-menu-item-group title="分组2">-->
        <el-menu-item-group>
          <el-menu-item index="1-3">版本管理</el-menu-item>
        </el-menu-item-group>
        <el-submenu index="1-4">
          <template slot="title">其他管理</template>
          <el-menu-item index="1-4-1">消息管理</el-menu-item>
          <el-menu-item index="1-4-1">消息管理</el-menu-item>
          <el-menu-item index="1-4-1">消息管理</el-menu-item>
          <el-menu-item index="1-4-1">消息管理</el-menu-item>
        </el-submenu>
      </el-submenu>
      <el-menu-item index="2">
        <i class="el-icon-menu"></i>
        <span slot="title">导航二</span>
      </el-menu-item>
      <el-menu-item index="3">
        <i class="el-icon-document"></i>
        <span slot="title">导航三</span>
      </el-menu-item>
      <el-menu-item index="4" disabled>
        <i class="el-icon-setting"></i>
        <span slot="title">导航四</span>
      </el-menu-item>
    </el-menu>
  </div>
</template>

<script>
  export default {
    name: "LeftNav",
    data() {
      return {isCollapse: false}
    },
    methods: {
      handleOpen(key, keyPath) {
        console.log(key, keyPath);
      },
      handleClose(key, keyPath) {
        console.log(key, keyPath);
      }
    }
  }
</script>

<style scoped>

</style>
